Investigation of Attenuation Correction for Small-Animal Single Photon Emission Computed Tomography

Table 1

Assessing the results after corrections of rat-sized phantom with five different parameters.

	Mean	CV	RMSE	NRMSE	MPE
Original	0.53612	0.03770	0.06675	0.11129	−0.10610
SC only	0.37846	0.05251	0.22217	0.37045	−0.36900
Chang + SC	0.58165	0.04194	0.03035	0.05060	−0.03020
CTAC + SC	0.60398	0.04257	0.02603	0.04340	0.00706
CTIACR + SC	0.60757	0.02789	0.01865	0.03110	0.01305
CTMAC + SC	0.62259	0.03755	0.03267	0.05448	0.03810

The true value of the activity concentration is 0.5997 MBq/mL.